Vibrating mechanism



Oct. 13, 1931. w. L.. KEEFER VIBRATING MECHANISM Filed Oct. 18, 195D 2Sheets-Sheet l AIn g L 7 f/f/ 5 Oct. 13, 1931. w. L. KEEFER VIBRATINGMECHANISM Filed Oct. 18, 1930 2 Sheets-Sheet 2 mensa' oat 1s, 1931connection lt ereof with a screen robe complished by reference to ydrawings.

- UNITED STA-Tas PATENTl oFFica WAI/m31.. REEFEB.. or ommannsnuno,PENNSYLVANIA vngm'rnvo ianonamsu Application neri october 1s,.19so.serial no. 489,669.

The invention relates to vibrating mechanisms of the type in which thevibration is produced by rotation of off-center weights. The vibrator is4intended primarily for use in vibrating screens or the like, forinstance, those used in milling separators, and it is the principalobject of the invention to provide a comparatively simple compact andeiiicient structure which will produce all necessary vibration but willnot have any tendency to cause-such excessive vibration as tonecessitate he use of restraining means.

With the foregoing iii view, the invention resides in the novel subjectmatter hereinafter described and-claimed, description being actheaccompanying Fig. 1 is a perspective view ofthe vibrator. Fig. 2 is acentral vertical longitudinal sectional view.

Figs. 3 land ,4: are vertical transverse sectional views on thecorrespondingly numbered lines of Fig. 2. preferred construction has.been illustrated and will be rather specically described, with theunderstanding however, that within the scope of the invention asclaimed, variations may be made. The numeral 5denotes an oil containingcasing for the various movable arts, s aid Casing havin attaching anges6 acilitating frame or other part to be vibrated. A removable cover 7 isprovided for the casing 5, allowin easy assembl of casing-containedparts an easy access tliereto for repair. This cover 7 vmay be providedwith a plug 8, removal of which allows introduction of a uantity of oil'9 into the casing 5, and anot er plug 10 I nay employed in one side wallof said casing, so that upon removal of said plug 10 and pouring oilinto said casing until it reaches the level ofthe opening previouslyclosed byV this plug,

it will be insured that the proper quantity of oil will exist in thecasing. -11 merely denotes a drain plug in the casing bottom. I

' Opposed vertical sides of the casing` are 'provided with axiallyalined bearings 12 and 13, the common axis of said bearings being.necting gear is parallel with the lane in which the ianges 6 aredisposed. oth bearings 12 and L 13 may well be formed integrally withthe casing body, and bearing 13 is provided with an appropriate bushing14 having oil-conducting ports 15 and an oil groove 16. The groove 16 islocated near the outer end of the bushing and is continuous, and theports 15 lead from this groove through the inner end of the bushing. Theinner ends of the ports 15 register with radial ports 17 at the innerend of the bearing 13, and the various ports serve to allow propertravel of oil to lubricate the interior of the bushing 14- and thehereinafter described shaft which rotates therein, the roove 16 servingto exert a restraining in uence on the'oil, tending to prevent it fromleaking at the outer end of the bearing., K

A short shaft 18 is snugly received in the bearing 12 and is rigidlysecured therein by a set screw 19, the inner end of said shaft 18 beingprovided with an enlarged integral head 20. This head is provided with abearing socket 21 and with an integral laterally projectin stud 22. Thesocket 21 is co-axial with the s aft 18 and opens through the innerextremity of the latter, and the stud 22 is perpendicular to the shaftaxis.

A rotatable shaft 23 passes through the bushing 14 and is provided witha reduced inner end 24 rotatably received in the bearing socket 21, theouter end of said shaft 23 being adapted for driving, for which purposea pulley 25 has been shown upon it. A groove 26 is preferably formedcircumferentially of the shaft 23 to register with the groove 16,assisting in restraining oil against leakage from the outer end of theshaft.

An off-center weight 27 is rotatable upon the rigidly secured shaft 18,and a second off-center weight 28 is secured to the rotatable shaft 23.Two beveled ears 29 and 30 which are co-axial with the s afts 18 and 23,rotate bodily with the olf-center weights 27 and 28 respectively, and abeveled conrotatably carried by the bearing stud 22, said gear 31meshing with said vigears 29 and '30. A large-headed screw 32 is shownfor retaining the gear 31 upon the `be made for this purpose.

The principal weighted portion 27 of the off-center weight 27, issecuredby cap screws or the like 33 to a segment 34 having a hub 35. This hubsnuglysurrounds a hub 36 on the gear 29 and is keyed to the4 latter asshown at 37, the gear hub 36 being rotatable upon the xed-shaft 18.

ofthe The principal weighted portion 28 off-center weight 28, is securedby cap screws or the like 38 to a segment 39 'having a hub 40. This hub40 snugly surrounds a hub 41 on the gear 30, and the parts 23, 40 and 41are all secured together by a pin 42. L By constructing the vibrator inor substantially in the manner shownand described, it may beeasily'manufactured at comparatively small expense, yet will be eicientand reliable in operation. Driving vof the shaft 23 by belt and pulleys`or in other preferred way,

causes rotation of the off-center wei ht 28,l and the gear 30 rotatingbodily wit said weight 28, drives the connecting gear 31, with theresult that ear 29 is driven to rotate the off-center weig t 27.Rotation of the two off-center weights, produces the required vibrationof the entire structure and the machine partto which it is connected.

.Attention is again invited to the fact that variations may be madewithin the scope of the invention as claimed.

I claim Il. lA vibrating mechanism comprising a support for connectionwith a part to be vibrated, a bearing carried rigidly by said support, ashaft rigidly secured to said support and projecting toward the innerend of said bearing in axial alinementwith the latter, a rotatable shaftpassing through said bearing, bearing means whereby the inner end ofsaid rotatable shaft is supported by the inner end of said fixed shaft,an olf-center weight secured to the rotatable shaft, a second ofl'-center weight rotatable upon the rigidly secured shaft, two beveledgears co-axial with said shafts and rotatable bodily with said weightsrespectively, a beveled connecting gear meshing with the first namedbeveled gears respectively, and means rotatably mounting said connectinggear on said rigidly secured shaft on an axis perpendicular to thelatter.

2. A vibrating mechanism comprising a support for connection with a partto be vi- -brated, a bearing'carried rigidly by said support, a shaftrigidly secured to said support and projecting toward the inner end ofsaid bearing lin axial alinemeiit with the latter, the inner end of saidrigidly secured shaft having a bearing socket co'axial therewith, arotatable shaft passing. through said-bearing and having its inner endrotatably received in said bearing socket, an o-center weight.. securedto the rotatable shaft, a second 0E- gears respectively,

Lacasse center weight rotatable upon the rigidly secured shaft, twobeveled gears co-axial with said shafts and rotatable bodily with saidweights respectively, a beveled connecting gear meshing with the firstnamed beveled and means rotatably mounting said connecting gear on saidrigidl secured shaft on an axis perpendicular to t e latter.

3. A vibrating mechanism comprising a support for connection with a partto be vibrated, a bearing carried rigidly by said support, a shaftrigidly secured to said support andprojecting toward the inner end ofsaid bearing in axial alinement with the latter, the inner end of saidrigidly secured shaft having a bearing socket co-axial therewith, arotatable shaft passing ing and vhaving its inner endl rotatablyreceived in said bearing socket, an off-,center weight secured to therotatable shaft, a second off-center weight rotatable upon` said rigidlysecured shaft, two beveled gears' coaxial with said shafts and rotatablebodily with said weights respectively, a beveled connecting gear meshingwith the first named beveled gears, lar to and rigid with said rigidly.secured shaft, said stud rotatably supporting said connecting gear.

4. A vibrating mechanism comprising a support for connection with a partto-be vibrated, a bearing carried rigidly by said support, a shaftrigidly secured to said support and projecting toward the inner end ofsaid bearing in axial alinement with the latter, the inner end of saidrigidly secured shaft having an integral enlarged head, a lateralbearthrough said bearand a lateral stud perpendicu'- ,Y

ing studintegral with said head and a bear-y ing socket in said head,said socket beingcoaxial with the shaft and said stud beingperpendicular to said' shaft, a rotatable shaftpassing through saidbearing and having its inner end rotatably received in said bearingsocket,an olf-center weight secured to the rotatable shaft, a vsecondoff-center weight rotatable upon the rigidly secured shaft, two beveledgears co-axial with said shafts and rotatable bodily with said weightsrespectively, and a beveled connecting gear rotatably mounted on theaforesaid caring stud,

said connecting'gear meshing with the first namedv gear.

5. A vibratingmechanism comprising a casing having two opposed walls, ashort stub7 shaftl rigidly secured to one of said walls and projectingtoward the other thereof; a beariilig rigidly carried by said other wallin axial a nement with said stud shaft, a rotatable shaft passingthrough said bearing and having its inner end rotatably supported by theinner end of said stub shaft, said rotatable shaft having a drivingmember at the exte.

rior of isald casing, one off-center weight ro tatable upon said stubshaft and having a beve ear, a second o-center weight secured to sairotatable shaft and having a bevel gear, a connecting ear meshing withthe aforesaid gears, an means mounting said 5 connectingear upon saidvstub shaft.

6. A v1 rating mechanism com rising a casing havin two opposed side was, alined bearings ri 'ly'carried by said walls, a short shaft whoseouter end is received in one of 10 said bearings, means non-rotatablysecuring said short shaft; in said one bearing,' a rotatable shaftpassing through the other bearin and having its inner end rotatablysupporte by the inner end of the fixed shaft, said ro- 15 tat-able shafthaving a drivin member at the exterior of the casin one o -center weightrotatable upon said ed shaft and having a bevel gear, a secondoff-center weightl secured to said rotatable shaft andhaving .a bevel 2ogear, a connecting ear meshing with the g aforesaid gears, and5y meansmount' saidl coniecting gear on the inner end of sai fixed sha t."

' In tesmony whereof I aix m `siature. 25 WALTER L. KZEE ER. V

